Amphetamine is thought to inhibit monoamine oxidase, Whilst the ability of amphetamine and its metabolites to inhibit different P450 isozymes along with other enzymes has not been sufficiently elucidated. In vitro experiments with human microsomes suggest slight inhibition of CYP2D6 by amphetamine and minimal inhibition of CYP1A2, 2D6, and 3A4 https://adderallxrdosing08642.national-wiki.com/646518/what_does_adderall_xr_peak_chart_mean